Citadel Securities Quantitative Trader interview experience

No offer

Hard

Positive

United StatesPosted Aug 2024 · Candidate report, summarized by Dataford

My process started with an online assessment that moved quickly—about fifteen questions focused on probability topics like combinatorics, Bayes rule, and Markov chains, with at least one question involving a t-test.

After that, there was a scheduling invite and then phone interviews where the discussions stayed rooted in markets and probability, and the later parts felt like they were building on that same theme.

Eventually I reached a “superday” style day where the structure turned into back-to-back rounds. Across the calls, the vibe was that they wanted clean reasoning and solid comfort with probability rather than specialized background knowledge. There was also some resume and personal background discussion threaded in, including why I applied and what I’d worked on.

The whole thing felt a bit

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